GEL LATEX HYBRID MATTRESS: Discover the luxury of this plush California king mattress. Bed foundation, box spring and frame sold separately. Mattress is adjustable base compatible COOLING CONSTRUCTION: Cooling gel latex, 2 layers of temperature-regulating material and copper-infused memory foam keep you at a comfortable temperature LAYERS OF COMFORT: Contouring comfort foam and pocketed coils deliver support & pressure relief. Pressure-sensitive NanoCoil unit & an individually wrapped coil pack help provide a great night's sleep CAL KING SIZE COMFORT: Measures 71" W x 83" D x 15" H. 10-year non-prorated warranty. Purchasing mattress and foundation from two different brands may void warranty; see warranty for details ARRIVES IN A BOX: Simply unbox, cut the protective wrap, unroll and watch the mattress expand. Please allow 48 hours for your mattress to fully expand. State recycling fee may apply When it comes to your comfort, discover the luxury of this hybrid plush mattress. A layer of cooling gel latex and two layers of temperature-regulating material keep you at a comfortable temperature all night long. Copper-infused memory foam contributes to the cooling performance, and pocketed coils keep your mattress fresh. Contouring comfort foam conforms to your body, delivering amazing support, pressure relief and comfort. In addition, the premium pressure-sensitive NanoCoil unit and individually wrapped coil pack help to provide a great night's sleep.